GARG, Vinod Kumar; SINGH, Amarjit. Social & Economic Implications of Universal Service Obligation Fund. Indian Journal of Marketing, [S. l.], v. 38, n. 10, 2008. Disponível em: https://indianjournalofcomputerscience.com/index.php/ijom/article/view/36864. Acesso em: 19 dec. 2025.